model : Add label for LFM2.5-230M

[tdakhran]

Overview

Update the label for the newly released model.

Additional information

Before:

| model                          |       size |     params | backend    | threads |            test |                  t/s |
| ------------------------------ | ---------: | ---------: | ---------- | ------: | --------------: | -------------------: |
| lfm2 ?B Q4_0                   | 139.90 MiB |   229.69 M | CPU        |      10 |           pp512 |      2406.44 ± 31.21 |
| lfm2 ?B Q4_0                   | 139.90 MiB |   229.69 M | CPU        |      10 |           tg128 |        311.06 ± 9.29 |

build: 1191758c5 (9780)

After

| model                          |       size |     params | backend    | threads |            test |                  t/s |
| ------------------------------ | ---------: | ---------: | ---------- | ------: | --------------: | -------------------: |
| lfm2 230M Q4_0                 | 139.90 MiB |   229.69 M | CPU        |      10 |           pp512 |      1956.20 ± 66.04 |
| lfm2 230M Q4_0                 | 139.90 MiB |   229.69 M | CPU        |      10 |           tg128 |        264.75 ± 7.80 |

build: 2b2805e4a (9797)

Requirements

• I have read and agree with the contributing guidelines
• AI usage disclosure: NO